# Papers Loaders

## Arxiv Papers Loader

This loader fetches the text from the most relevant scientific papers on Arxiv specified by a search query (e.g. "Artificial Intelligence"). For each paper, the abstract is extracted and put in a separate document. The search query may be any string, Arxiv paper id, or a general Arxiv query string (see the full list of capabilities [here](https://info.arxiv.org/help/api/user-manual.html#query_details)).

## Usage

To use this loader, you need to pass in the search query. You may also optionally specify a local directory to temporarily store the paper PDFs (they are deleted automatically) and the maximum number of papers you want to parse for your search query (default is 10).

```python
from llama_index import download_loader

ArxivReader = download_loader("ArxivReader")

loader = ArxivReader()
documents = loader.load_data(search_query="au:Karpathy")
```

Alternatively, if you would like to load papers and abstracts separately:

```python
from llama_index import download_loader

ArxivReader = download_loader("ArxivReader")

loader = ArxivReader()
documents, abstracts = loader.load_papers_and_abstracts(
    search_query="au:Karpathy"
)
```

This loader is designed to be used as a way to load data into [LlamaIndex](https://github.com/run-llama/llama_index/tree/main/llama_index) and/or subsequently used as a Tool in a [LangChain](https://github.com/hwchase17/langchain) Agent. See [here](https://github.com/emptycrown/llama-hub/tree/main) for examples.

## Pubmed Papers Loader

This loader fetches the text from the most relevant scientific papers on Pubmed specified by a search query (e.g. "Alzheimers"). For each paper, the abstract is included in the `Document`. The search query may be any string.

## Usage

To use this loader, you need to pass in the search query. You may also optionally specify the maximum number of papers you want to parse for your search query (default is 10).

```python
from llama_index import download_loader

PubmedReader = download_loader("PubmedReader")

loader = PubmedReader()
documents = loader.load_data(search_query="amyloidosis")
```

This loader is designed to be used as a way to load data into [LlamaIndex](https://github.com/run-llama/llama_index/tree/main/llama_index) and/or subsequently used as a Tool in a [LangChain](https://github.com/hwchase17/langchain) Agent. See [here](https://github.com/emptycrown/llama-hub/tree/main) for examples.
